Went to the hardware store and bumped on those wall pipe holders, just what I needed to have, perfect for my application. Now the whole hc/sh/fan combo is in place, holds pretty strong, but I'm still thinking of having one more bolt vertically from the pump to the hc to push it down in place.
Also, got the crippled drive cage installed on the back of the case, still having the room for a fan to cool the hdd's with some fresh air. Got two seagate 120 gig barracudas in sata raid, more than enough for my needs...